γ-オリザノール 化学特性,用途語,生産方法
外観
白色〜わずかにうすい褐色, 結晶性粉末〜粉末
定義
本品は、フェルラ酸とテルペンアルコールのエステルであり、次の化学式で表される。
溶解性
アセトンに溶けやすく、メタノールにやや溶けにくく、水にほとんど溶けない。
用途
医薬品及び化粧品の原料。
用途
コレステロール吸収抑制作用 を示します。
用途
コレステロール吸収抑制作用
を示します。
化粧品の成分用途
皮膚コンディショニング剤
効能
抗不安薬, 脂質異常症治療薬
商品名
ハイゼット (大塚製薬); ハイゼット (大塚製薬)
使用上の注意
不活性ガス封入
説明
Gamma oryzanol is a lipid fraction derived from rice-bran oil. Oryzanol was first isolated from rice-bran oil in the 1950s. Several lipid fractions were isolated from the oil.The third (gamma) fraction isolated was oryzanol.It is made up of a mixture of ferulic acid esters and plant sterols. Similar in structure to cholesterol, the phytosterols and triterpenes that comprise oryzanol include campesterol, stigmasterol, beta sitosterol, cycloartanol, and cycloartenol. Because phytosterols are poorly absorbed, it has been suggested that they may reduce blood cholesterol by inhibiting intestinal cholesterol absorption.In contrast, the ferulic acid portion of gamma oryzanol is easily absorbed into the body's tissues. Ferulic acid also has demonstrated antioxidant properties in vitro.
化学的特性
White to Off-White Solid
天然物の起源
Gamma oryzanol is found in rice-bran oil, which is commercially available in Japan for use in salad oils and frying.Crude rice-bran oil contains approximately 1.56% oryzanol.Of the 180 mg of plant sterols found in the typical American diet，about 4% is gamma-oryzanol.One cup of brown rice provides 18 mg gamma oryzanol, whereas white rice provides 4mg. The ferulic acid portion of gamma oryzanol is naturally found in the bran of cereals, and in fruits and vegetables.Ferulic acid is also a metabolite of caffeic acid found in coffee.
使用
Gamma Oryzanol is a mixture of 6 substances derived from rice bran oil, including sterols and ferulic acid, called Cycloartanyl Ferulate or Triterpene alcohol ferulate. It has been approved in Japan for several conditions, including menopausal symptoms, mild anxiety, stomach upset, and high cholesterol. In the US, it is widely used as a sports supplement, as well as for reducing cholesterol. gamma oryzanol is widely used as a food additive, pharmaceutical material. In cosmetic area, the application to creams and sunscreens exploiting its skin age resistor function and ultraviolet absorbing effect.
製造方法
Extraction of gamma oryzanol from processes oil.
Gamma oryzanol can be extracted by liquid-liquid extraction method by using organic solvent or by using supercritical extraction method. The following procedure was followed to extract gamma oryzanol from the oil.
Rice Bran Oil (1 kg)→NaOH and water was added→Stirred and stored for one day at room temperature→Acidified to pH 4 using H2SO4→Heated to 80°C→50g NaCl was added→Oily layer was obtained→ Methanol was added→ Mixture was cooled to 0°C for 2 hrs.→ Waxy component precipitated→ Solution of 5g H2SO4 in 300 ml methanol→ Stored for one day→ Stirred at 40°C to remove/evaporate methanol→ To 100g residue 100g n-hexane was added→ Solvent Distillation→ Treatment of 100 ml methanol was given→ Residue was extracted 3 times with 50ml 0.5N→ methanolicNaOH→ Neutralised with methanolic acetic acid to pH 6.8-7→ Stored to precipitate gamma oryzanol.
The yield of gamma oryzanol was found to be 2.2%
一般的な説明
Gamma oryzanol is found in the by-products of the rice industry, such as rice bran and rice bran oil. It exhibits a wide range of biological activities, including anticarcinogenic, anti-inflammatory, antihyperlipidemic, and neuroprotective properties, which are primarily due to its high antioxidant capacity.
副作用
Gamma oryzanol has no side effects for horses, dogs or humans.
Toxicity studies on animals demonstrate that gamma oryzanol is a very safe compound. No significant side-effects have been reported in human trials at the above noted recommended dosage.
Some research suggests that gamma oryzanol taken in moderately high amounts (up to 600 mg per day) for several months can cause dry mouth, sleepiness, hot flushes, irritability, and light headedness in some individuals.
安全性プロファイル
A poison by skin contact. Moderately toxic by intravenous route. Low toxicity by ingestion. Experimental reproductive effects. When heated to decompositionit emits acrid smoke and irritating vapors.
Dosage
A typical dosage of gamma oryzanol is 500 mg daily.
γ-オリザノール 上流と下流の製品情報
原材料
準備製品